Part of the backstory here is that ai-class.com is by Udacity (Sebastian Thrun), while ml-class.org and pgm-class.org are by Coursera (Andrew Ng and Daphne Koller). Formerly colleagues from the same department, now competitors with very similar education startups, all the way down to the naming conventions. Lot of fur flying about who copied who.
Coursera has been launching a ton of classes[1]. Probably Sebastian feels that to beat Andrew and Daphne, he has to go full time.
Coursera has been launching a ton of classes[1]. Probably Sebastian feels that to beat Andrew and Daphne, he has to go full time.
[1] http://www.cs101-class.org/hub.php